Controlling device for automatic musical instruments.



No. 854,689. PATENTED MAY 21, 1907. G. H. DAVIS. CONTROLLING DEVICE FORAUTOMATIC MUSIGAL INSTRUMENTS.

APPLIOATION FILED BEPT.27.1905.

3 SHEETS-SHEET l.

PATENTED MAY 21, 1907.

G. HQ DAVIS. CONTROLLING DEVICE FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED SEPT. 27.1905.

3 SHEETS-SHEET 2.

m MR 0 m w w NM). \M/m QM, wm n o mm \o i w witmuwo No. 854,689.PATENTED MAY 21. 1907.-

- e. H. DAVIS.

CONTROLLING DEVICE FOR AUTOMATIC MUSICAL INSTRUMENTS.

APPLICATION FILED 8BPT.27,1906.

3 SHEETS-SHEET 3.

9 g5 3 26 V E8 66 @g. /0. 34 46 989mm 7 6M UNITED sT rns PATENT orrion.

GEORGE HOWLETT DAVIS, OF WEST ORANGE, NEW JERSEY.

('Jriginal application filed November 26,

Specification of Letters Patent.

Patented May 21,1907.

1901, Serial No. 83,687. Divided and this application filed September 271905' Serial No. 280,334.

To all whom it may concern:

Be it known that I, GEORGE HOWLETT DAVIS, a citizen of the UnitedStates, residwhich the following is a specification.

' tion as provided for by will This invention relates to certain new anduseful improvements in electrical self-playing musical instruments, andis a division of my application, Serial number 83.687, filed Nov. 26,1901.

The resent improvement relates more particular y to a novel constructionof music roll holder, and to novel and improved means for winding andrewinding the music sheet on its delivery and take-up rolls.

The invention also has in view means associated withthe roll holder foraccommodating music rolls of varying'width.

The invention has for its object further to provide novel and simplemeans for varying the speed of travel of the music sheet.

To these and other ends the invention con sists in the novel features ofconstruction and combinations and arrangements of parts hereinafterreferred to in detail and then more definitely brought out in theclaims.

In order to enable othei s skilled in the art touunderstand, make anduse my said inventhe patent statute, I

proceed to descri e the same in detail,

- reference being had for this purpose to the accomp anying Figure 1 1sa vertical transverse sectional drawings in whichview of my improvedattachment, shown as applied to a piano the music roll holder beingshown attached to the under side of the piano keyboard; Fig. 2 is a sideview of the music roll holder showing the mechanism for varying thespeed at which the music sheet is driven; Big. 3 is' a verticallongitudinal seetional view of the music roll holder, the same beingshown partly drawn out or extended beyond the front edge of the pianokey base;

Fig. 4 is a vertical sectional view taken on the line 4 -4; of Fig, Fig.5 is-a detail view of the frame carrying the metallic contact roller;

Fig. 6 is a bottom plan view of the music roll holder; Fig. 7 is an endview of the'same, portions being shown-in section Fig.

8 is a detail.

. end bearing extended.

take-up roller; Fig. 9 is a detail sectional view illustrating themanner of journaling the delivery roller; and Fig. 10' is a detail viewof the hook for holding the adjustable Before proceeding to describe theconstruction of, my improved attachment, 1 will explain that it relatesto that class of piano playing attachment wherein a perforated musicsheet is caused to travel over a metal lic roller which forms anelectric circuit, a series of metallic fingers or brushes, termedselectors resting on the music sheet at a point where it passes over thecontact roller. Said selectors are e ual in number to the piano keys anda con ucting wire leads from each selector to an electromagnet, therebeing one electro-magnet for each piano key. Each of said magnetscontrols mechanism for actuating its corresponding piano key, theconstruction of which is such that when any particular operation thecorresponding actuating mechanism and operates its piano key to sound anote. Conducting wires lead from each electro-magnet to a battery orother electric generator and from the latter a conducting wire-leads tothe contact roller. It follows, therefore, that as long as animperforate portion of the music sheet lies between the se lectors andthe contact roller the circuits will be broken by the music sheet andnone of the piano keys will be actuated. Whenever a perforated portionof the music sheet, however, comes between the end of any of thesclectors and the contact roller, said selector will immediately springinto contact with. said roller and close the circuit through a corresponding magnet and actuate a corresponding piano key. This broadprinciple of operation is common 1n self-playing musical 1nstrumentspreviously patented to me, and is only briefly present invention to bemore readily understood.

1 have shown my improved music roll holder in connection with the wellknown shoe and roller keyactuating means, such as exhibited in priorpatents granted to me. This actuating means isshown in Fig. rand insaiddi ure the reference numeral} desig View showing the gearingconnected ,to the'j l'pendent from the under side of the key baserofoutlined herein to enable the the piano. This drum is rotated byanelec-' friction shoe 8, said friction shoe bein suspended above andnormally held'out contact with the drum 1, by means of the springs 6.Pivoted to theupper outer corner of each shoe 8 is a vertically movablestriker rod 9,

the upper end of which is provided with a head 10, adapted to impingethe projection 11 driven into the rear end of the piano key 12, all asmore clearly shown in Fig. 1. The drum 1 is continuously rotated in thedirection of the arrow, Fig. 1, by the motor 2, andwhenever oneof theelectromagnet's 4 is energized' through,the means hereinafter described,it attracts its armature 5, thereby depressing the rod 7 carried by itand forcing the curved lower face of the shoe 8 into contact with thedrum. Owing to the rotation of the drum, the shoe is rocked about itspivotal connection with the rod 7, as acenter, thereby thrusting thestriker rod 9 up ward. against the extension 11' of the piano key 12,causing the rear end of the latter to move upward and through the usualhammer action sound the note.

My improved music holder comprises two horizontally sliding framesmovable to ether and independently of one another an both sup orted by afixed frame secured to the un er side of the base of the piano keyboard,'said music holder being constructed as follows.

The numeral 13 indicates a flat rectangular and open metallic framesecured to the underside of the key basein any suitable manner andhaving opposite parallel depending sides 14 provided'with outwardly andhorizontally extending vflanges 15.

The music holder proper comprises an up- I erand a lower rectangularopen metallic :from the selector-bar '19, and from each other, therebeing as many selectors as there rame respectively indicated-by thenumerals 16 and 17, the sides 'of the frame 16 being provided withinternal. longitudinal grooves 18, into which the flanges 15 looselyproject, said flanges forming ways on which the frame 16 may be slid inand out beneath the keyboard of the piano. of description, I term theframe 16 the seleetor frame. Mounted between the sides of the frame 16is a transverse bar 19 in which are fixed'the selectors 20, eachconsisting-of a metallic brush the brushes being insulated are pianokeys to be operated. -The opposite lower edges'of the sides of theselectorv frame 16 are-provided with inwardly and the selectorsl For theconvenience loosely project 1nto corresponding grooves 22 formed in theupper outer portions of the sides of the frame 17, which'l-term therollholder frame. The roll-holder frame may be freely slid back andforth on the flafnges' 21 or both the selector and roll holder frame maybe slid in and out together on the flanges 15 of the fixed frame 13. l rJournaled in the-frame 17. in the manner hereinafter described, is adelivery roller 23 and a take-up roller 24, the delivery roller beingthe roller on which the perforated music sheet 25 is wound and thetake-up roller operating to unwind the music sheet.

from the deliver roller. Pivoted as at 26,

to lugs 27 forme .on the outer ends of the op-' posite sides of theroll-holder frame 17, are two arms 28, united. at th'eirinner ends by across-b ar 29, preferably formed integral'with or metal'cov'ered roller,overwhich the clearly shown in Fig. 3. A coiledspring 32- said-arms. Journaled in bearings formed 1 on the inner ends of the arms 28jisrthidcon tact roller 31, consistingof a metallic roller,

is arranged between the under side of the cross-bar 29 and a transverseintegral-web 33 uniting the two sides of the roll-holder frame, andoperates to normally. hold the contact roller in engagement with theends of On'the outer or freeends of the arms 28 are formed outwardly andhorizontally projecting lugs or projections 34, which are adapted toengage the u per sidesof the flanges 21 of; the selector rame 16.

As shown by dotted lines in Fig. 3, the outer ends of the flan es 21-are bevel-ed, as at 35,

and have forme at their upper sides immediately in rear of said beveledportions grooves or recesses 36, in which the lugs34 rest when the twoframes 16 and 17 are closed together. Pivoted to the inner end' ortionof each of the arms 28 is one end of a ink-37, the other end of which ispivoted'tooneend of a bell crank lever or trigger 38," ivoted as at 39,to theside of the roll hol er frame.

The free or depending end 40 of: the, lever ro jects below theroll-holder frame an formed tobe conveniently engaged ,by a finger ofthe hand to draw out theroll-holder' rame. .When the operator enga essaid trigger-levers to draw out-the rol'f holder frame, the pressure onsaid levers first rocks them on their'pivots 39, and through themediumof the links 37 depresses theinnerends of the arms 28, and the roller31, thereby lifting the lugs 34 out of the grooves lor recesses 36,whereupon theroll-holder frame is released from the selector frameandmay be freely drawn out; This-movement also lowers thecontact-rollers 31, away from the selectors 20, so that there is nodanger of'said selectors catching in the perforations of thelnusic'sheet and being thereby brokembent I end of which has fixedthereon a pinion 64 v or otherwise injured. When the roll-holder frameis pushed back into place beneath the selector frame the lugs 34 ride upthe inclined ends 35 of the flanges, thereby lowering the contact-rolleruntil said lugs settle into the grooves or re'c'esses 36, upon which thespring raises the roller into contact with the sefactors and holds thelugs seated in said grooves, thus locking. the-roll-holder and se' ectorframes together.

Inorder to cause the music sheet to travel over the contact rollerat anydesired speed, I provide the following means. Referring to Figs. 1, 2and 6, the numeral 41 indieatesa Shaft journaled in any suitable mannerhe- -neath the piano keyboard, and having fixed pendently thereof, is arelatively large frie thereon a pulley 42, which is driven b y a belt 43from a pulley 44 on the drum 1. Movably mounted on, but incapable ofrotating indetion disk 45, which is held in frictional en- 'gagementwith a smaller friction wheel 46 by a coiled spring 47 arranged on theshaft 41 and bearing against a collar 48, on said shaft. As shown, theperiphery of the friction wheel 46 bears against the face of the disk45, and said friction wheel is fixed on a shaft 49,

'which is longitudinally movable in a bearing formed in a bracketpendent from the under side'of the key-base and in a worm 51 which isrotatably mounted in a bracket 52 fixed to one side of the selectorframe 16, said worm being splined on the shaft 49, so that it can slidethereon but not rotate independently thereof. The worm 51 gears with aworm wheel 53 (see Figs. 1, 2 and 8) journaled in one end of a swingingarm 54, the other end of said. arm being pivoted on the journal of thetake-up roller 24. Fixed on the journal of the worm wheel 53 is a pinion55, which gears with a gear wheel 56 fixed on the end of the take-uproller 24 and thus rotates the latter to wind up thereon the music sheet25. By mounting the worm wheel in theend-of the swingin g arm in themanner described, the forinenis permittml to'rise and lower slightlywhen engaging and disengaging the.

worm, which it must do whenever the rollholder frame 17 is moved in andout independen tly of the selector frame 16. A pm 57 is fixed in oneside of the roll holder frame and acts as a stop or support for theswinging arm when said f ramc is drawn out. Fixed to orformed on theouter edge 'of one side of the selector frame 16 is a circular graduateddial or disk 58; pivoted centrally to the under side of which one end ofa lever 59, termed by me a tqmpodever, said lever being provided atitsouter end with a handle 60 (see Fig. 7) and with a pointer 61, whichoverhangs the graduations on the disk or dial. Pivotod to thetempo-lever is one end of a slotted liar 62, the other end of which ispivoted to the outer end of a lever 63 {the mner (see Fig. 6) and ispivoted to a bracket arm 65 fixed to one side of the selector frame 16.

The inner end of the tempo-lever in like manner has fixed thereon asimilar pinion 66, and both said pinions gear with a rack-bar. 67,

that-is supported to move longitudinally by headed pins 68 and 69, whichproject from the under sides of the bracket arm 65 and disk 58,respectively, and extend through the slots\70 formed in the ends of therackbar. Pivoted to bracket-arm 71 fixed to the frame 13,is a bell cranklever 72, the end of one arm of which is provided with a headed pin 73which projects through the slot 74 in the slotted bar 62, and pivoted tothe end of the other arm of said'bell-crank lever is one end of a rod75, the other end of which is hooked into a loop 76, formed centrally ina rod 77 which is' pivotally.connected at its upper end to an eye 78 onthe rear end of the frame 13, and at its other end is loosely loo ed, asat 79, about a peripherally grooved (JOlfftI 80 fixed by a set screw onthe shaft 49.

The operation of this part of the device is as follows. Let it beassumed that the parts are in the position shown in Fig. 6, wherein theselector and roll-holder frames are shown pushed in beneath thekeyboard, and in which position the take-up roll will be driven at itsfastest speed. Now if the lever 59 be swung about its pivot in thedirection of the arrow, it will draw forward with it and at the sametime move the slotted bar 62 toward the music holder or toward the leftas viewed in the drawing. This movement of the slotted bar rocks thebell-crank lever 72 on its pivot and thrusts rearward the rod or link75, thereby swinging the lever 77 rearward and moving the shaft 49 inthe same direction,

thus shifting the friction Wheel nearer to the center of the frictiondisk 45 and conseq ucntly reducing the speed of rotation of the shaft49. The shaft 49 being geared to the take-up roller througl'i thegearing described, said roller will also, therefore, be driven at aslower speed and cause the music sheet to travel over the contact rollerat a correspondingly slower speed. By gearing the slotted bar 62 to therack-bar 67 in the manner described, said slotted bar will always remainparallel with the adjacent side of the music holder and hence a givenmovement of the tempo-lever will impart a corresponding movement to thebell crank lever 72 irrespective of the position of the tempo-lever. Byconnecting the tempo-lever to the bell crank lever 72 by means of theslotted bar 62 latethe spee'd of travel of the? music sheet irrespectiveof the position of .the selector frame whether it be entirely pushed in"or drawn out or at an intermediate point.

In order to readily remove the delivery roller from its frame so as tochange from one music sheet to another, and in order-to re-' Wind themusic sheet thereon, I journal the delivery roller in the frame in themanner, and provide rewinding mechanism, will now describe. A' trunnion81 is fixed on each end of the deliveryroller 23, (see Figs. 7 and 9)and is provided with one or more laterally projecting lugs or win s 82Journaled in each side of is a spindle 83, provided atone end With'ahead-84, and havmga central SOGkOli-dll which. the trunnion 81 is adated to be loosely fitted, and also having a s ot pr recess 85 forthereception of the lugs 82, whereby the. delivery rol er and said s indleare caused to rotate together. The spindle adjacent to the head 84 isprovided with an integral collar or enlargement 86, that is adapted tofit within a corresponding'soeket 87 formed in the inner side of theframe 17. the spindle 83 is a pinion 88 that is disposed- 'Splined onPiv in -a recess 89 formed in the frame 17.

oted on the pivot pin 39, before referred to,

is a-hooked catch 90, the forked end '91 of which is adapted to hookover the collar 84, as hereinafter explained. On one sidethe frame 17 isprovided with an 0 en bearing 92. To journal the delivery rol er inplace, one of" the trunnions 81 is inserted in the socket in the end ofthe spindle 83, and the opposite'trunnion is dropped into the open bearng 92. Thereare'two sizes of music roll holders on sale on the marketand the shorter rolls are too short to be journaled in the mannerdescribed. When such rollers.

are to beused the spindle-is drawn out, as shown in Fig. 9, and thehooked catch is which .1

the roll-holder frame 17 swung up or over so as to hook over the spindlebehind the head 84, thus holding the spindle in place to be engaged bythe trunnion of the shorter roller; end of the roll holder frame tofurnish convenjient means for drawing out both said frame and theselector frame om beneath the keyboard. J ournaled on a stud shaft onone side of the frame -17, is a pinion 94, see Fig.2, which gears withthe inion 88 before described, and also-journa ed on-a stud shaft on thesame side of said frame is a gear wheel 95,

which gears with the pinion 94. A crank or handle 96 is fixed to thegear wheel 95. Afterthe music-sheet has been unwound from the deliveryroller it may be rewound thereon by turning the gear wheel 95 byitshan'dle 96, whereby, through the gearing described, the music-sheetmay be rapidly rewound onto the delivery roller. By unhooking the end ofthe music sheet from the take-up roller the delivery roller mayberemoved from the frame and another one inserted.

Knobs 93 ,are fixed on the.

. take-up roll'.

Having thus described my invention, what '1 claim as new and desire tosecure by Letters Patent is '1; A piano movably sup thereof and a havinga orted Y beneath the keyboard apted to be drawn out to bring the musicsheet in view and to be moved in underfthe keyboard, ,aglelivery and atake-up roll supported by said music holder, and means for driving thetake-up roller when the music holder is in itsdrawn out or pushed inposition or in any intermediate position, substantially as described.

. 2. A piano having a music sheet holder and means whereby said holderis'movably supported beneath the keyboard of the piano and adapted to bedrawn out to. bring the 'music sheet in view and to be moved in underthe keyboard, a delivery and a take up roller supported by said musicholder, means for driving the take-up roller and mechanism for varyingthe speed of said drivin means, said driving and speed changing devicesbeing operativewh'en the-music sheet holder is in its drawn out orpushed in position-or in any intermediate scribed. v x

3. A'piano having 'a laying attachment, compris ng a rotatable rum andmeans for rotating it, a bodily movable -music-roll .holder framesupported beneath thepiano keyboard and carrying a delivery and 'atake-up roll 'journaled in suitable bearings, a rotary disk driven bythe drum, a shaft longitudinall'ymovable in a bearing on the frame ofthe music-roll holder, gearing intermediate said shaft-and take-up roll,a friction wheel carried by said shaft and having its periphery infrictional eonta'et with the rotary disk, andmanually controlled meansfor moving the sh'aft longitudinally irres ective of the position ofthe'music roll ho der frame -to shift the position of the friction wheelrelatively to the disk whereby to vary the speed of the 4. piano havinga playing attachment, comprising a rotatable drum, means for rotatingit, and means actuated by the drum for striking the piano keys, a musicsheet.

music sheet holder position, substantially as",de-.

' drum for location of the. slidingmeans for rorro.

a music sheet holder comprising a frame'slida'ble from and beneath thepiano keyboard, a delivery and a take-up roll journaled in said frame,means derivin motion from the rotar drum for rotatin the take-up roll,mechanism for chang ing t e speed at which said take-up roll is driven,and means for operating said speed changing mechanism while the slidingframe is in any of its positions, substantially dey scribed.

6. A piano having' a playing attachment,

- comprismg a rotatable drum, means for iotating it, and means actuatedbythe drum forstriking the piano ke s,- a music sheet holder slidablyarranged 'eneath the piano keyboard, a delivery and a take-up rollerjournaled in said holder, a friction -disk driven from the drum, a.shaft longitudinallymovable in a bearing carried by said sliding holder,and in a fixed ,bearing, a friction wheel on. said shaft ha its eri heryarranged in frictional contact wit t e face of sai disk, a worm spl' edon said shaft and movable with the mu 0 sheet holder, gearing driven bysaid'worm for driving the take-up roller, and means forlongitudinallyshifting the shaft to move thefriction wheel towar pianokeyboard, a deliver 'roller journaled in said hol er, a friction dis andfrom the center of the friction disk, substantially as described.

7. A piano" havin a playing attachment, comprising a rotata le drum,means for rotating it, and mechanism .actuated .by the drum for strikingthe piano keys, a music sheet holder slidably arranged beneath the and atake-u driven from the drum, a shaft longitudinally movable in a bearingcarried by said holder and in a fixed bearing, a friction wheel on saidshaft having its periphery arran ed in frictional contact with the faceof said isk, a worm splined on said shaft and movable with the musicsheet holder, a worm wheel and pinionilriven by, said worm, a gear wheelon the take-up gearing with the "pinion, and

means for shifting said shaft lon itudinally independently of themovemento the music sheet holder to move the friction wheel toward andfrom the center of the friction disk, substantially asdescribed' .8. Apiano havin a'playing attachment, comprising a musics eet holderconsistiniof y .two independently movable frames slida arranged beneaththe piano keyboard, one of said frames carrying a series of selectors, adelivery roller and a -takeup roller'c'arried-by the other frame, acontact-roller arranged between said two rollers, a friction'disk and-means for rotating it, a shaft 10 "tudinally movable'in a bearingcarriedb t e selector frame-an in afixed bearing, a iction wheel "rigidon said shaft and having its eriph'ery arran ed in frictional contactwith t e'face of said isk, a worm splined on said shaft/and movablewithathe selector frame, a swing-- ing ar'm carried by the-roll-holderframe a worm wheel and pinion mounted in thefree .up roller carried bthe other frame,- a contact roller arrange between said two rollers,

a friction' 'disk and means for rotating it, a

shaft longitudinally movable in a bearing carried by the selector frameand in a fixed bearing, a friction wheel rigid on said shaft and havingits peripher arranged in frictional contact with the ace of said disk, aworm splined on said shaft and movable with the selector frame, aswinging arm carried by.

the roll holder frame a worm wheel and pin ion mounted inthe free end ofsaid swinging arm, the worm wheel gearing with the worm and the pinionwith 'a'gear wheel on-the take up roller, me ans for supporting saidswingingarm when the two frames are separated, and

means for shifting said shaft longitudinally, 4 as described andfor thepursubstantially pose specified.

10. A piano having a music sheet holder comprising two independently'movable too frames slidably. arrangedbeneath the piano keyboard,aseries of selectors carried by one of said frames, a deliver roller, acontact roller and a take-up rol er carried by the other of said frames,a'driven shaft, gearing driven by said shaft while the music sheetholder is in any of its positions for driving the take-up roller, s eedchanging mechan ism controlled b fhe longitudinal movement of said shat, a collar on the shaft, a swinging arm pivotally connected at one endto a fixed support and loosely .connected at its other endto saidcollar, a bell crank lever, a-rod connecting one end of said bell crank"lever to theswinging arm, apivoted lever,

and means slidably connecting said lever with the other end of saidbell-crank lever,

whereby when the pivoted lever is turned the said shaft will be shiftedlongitudinally to change the speed of the driving mechanismindependently of the position of the music sheet holder, substantiallyas described.

11. A piano having a music'sheet holder. comprising two independentlmovable frames slidably arranged beneat the'piano "keyboard, a'seriesofselectorscarried by one of saidfram'es, a delivery'roller, a contactroller, and. atake-u'p roller carried .by the other of saidfframes, alongitudinally movable driven shaft, gearing driven by said shaft whilethe music sheet holder is in any of its positions for driving the take-uroller, speed changing mechanism controlle by the longitudinal movementof said shaft, a collar on the shaft, a swinging arm pivotally connectedat one end to a fixed sup ort and loosely connected at its other end tosaid collar, a bell crank lever, a rod connecting one end of saidbell-crank lever to the swingiing arm, a pivoted hand-lever, a slottedbar pivotally connected at one end to a swinging arm and at its otherend to said pivoted lever, and a projection on the other end of saidbell-crank lever and projecting into the slot of said bar, substantiallyas described and for the purpose specified.

12. A piano having a music sheet holder comprising two independentlymovable framesslidably arranged beneath the piano keyboard, a series offrames slidably arranged beneath the pianokeyboard, a series ofselectors ,carried by one of said frames, a-

delivery roller, a contact roller, and a takeup roller carried by theother of said frames,

a longitudinally movable driven shaft, gearing driven by said shaftwhile the music sheet holder is in any of its positions for driving thetake-up roller, speed changing mechanism controlled by the longitudinal,movement of said shaft, a collar on the shaft, a swinging arm pivotallyconnected at one end to a fixed support and loosely connected at itsother end to said collar, a bell crank lever, a rod connecting one endof said bell crank lever to the swinging arm, a pivoted hand lever, aslotted bar pivotally connected at one end to a swinging arm and at itsother end to said pivoted lever, a projection 'on the other'end of saidbell crank lever and projecting into the slot of said bar, and means forcausing said b'arto always move parallel to a fixed line passing throughthe fulcrum of theT hand lever, substantially as described.

3. A piano having a music holdercomprising two independently movableframes slidably arranged beneath the keyboard,;a series of selectorscarriedby one of said frames, a delivery roller,a contact roller, and atake-uproller carried by the other of said frames, a longitudinallymovable driven shaft, gearing driven by said shaft while the :musicholder is in any of its positions, for driving. the take-uproller,-speed changing mechanism controlled by the longitudinal movementof said shaft, a collar on' the shaft, a swinging arm pivotallyconnected at one 'end to afixed support and loosely connected at itsother end to said collar, a .bell crank le- 'ver, a rod connecting oneend ofsaid bell crank lever to the swinging arm, ahand lever, a slotted{bar pivotally' connected at one end to said hand lever and at itsopposite end to an oscillatory arm, a projection on the other end ofsaid bell crank lever projecting into the slot of the slotted bar,pinions fixed respectively on the axes of the hand lever and oscillatoryarm, and a longitudinally movable rack-bar engaging said pinions and op,

erating to cause the slotted bar to always move in a direction parallelto a fixed line passing through the axis of-the hand lever,substantially asdescribed. p

14. A piano having a music sheet holder formed of independent slidablemembers,

means for slidably connecting said members locking lever on its fulcrumand a handle on said manual lever adapted to be grasped to draw out themember carrying said locking lever, the arrangement being such that whenthe two members are' brought together the detent will engage saidbeveled projection and will be guided by the latter into the recess tolock the two members together and when the handle of the locking leveris grasped and pulled upon to draw out the said member, said lockinglever will be rocked on its fulcrum and raise the detent out of saidrecess, substantially as described.

15. A piano having a music sheet holder formed of independent slidablemembers,

a manually operated lever pivoted to the,

Tpiano keyboard, the

- IOO andmeans for slidably connecting said inem member carrying thelocking lever and' provided with a handle for withdrawing the saidmember, a link connecting said manual lever with the detent end of thelocking lever,

and a spring arranged under the other end of sa1d lever and operating toforce'ihe detent into the said recess, the handle when grasped andpulled upon to draw out the said member operating to raise the detentout of the recess and disengage the two members one from the other,substantially as described.

16. A piano having a music sheet holder formed of independent slidablemembers and means for slidably connecting said members to the-undersideof the piano keyboard, in combination with a series of selectors carriedby the upper-of said members, a deliveiiy roller and a take-up rollercarried by the other of saidmembers, an oscillatory frame contact rollerinto engagement with the sevin combination with a series of selectorscarsprin move the contact roller into engagement With the selectors andto cause said locking means formed of independent sliding members, andbthe upper of said members, a delivery roller and take-up roller carriedby the other by the lower member and provided With desaid frame, aspring'for raising one end of the means for rotating said roll to-.windthecarried by the lower member, a contact roller ournaled in said frame,a spring for raising one end of said frame to move the lectors, andmeans for drawing" out the member carrying said rollers, and arrangedwhen the said means are operated'to draw out said member to lower thecontactroller out of engagement with the selectors, substantially asdescribed. l

17. A piano having a musicsheet holder form ed of independent slidablemembers, and means for slidably connecting saidmlemhers to the underside of the piano keyboard,

ried by the upper of said members, a delivery roller and a take-uproller carried by the other of said members, an oscillatory framecarried by the lower member andyp'rovided with means for interlocking'Wl'til thaupper member to lock said members together, a contact rollerjournaled. insald frame, a

g for raising one end of said fname to.

to lock the two members together, and means for drawing out the membercarrying said rollers and arranged when said means are operated to drawout the said member to iower the contact roller out of engagement withthe selectors and simultaneously unlock the two members, substantiallyas described.

Apia-no having a music sheet holder means for slida connecting saidmembers to-the under side of the piano keyboard, in combinat on w th aseries of selectors carried ofsaid members, anos'cillatory frame carriedtentsatone end adapted to interlock with recesses 1n the upper member tolock said members together, a contact roller 1ournaled in frame tomovethe contact roller into engagement with the selectors and cause saidetents to engage said recesses, handles pivotedto the lower member forwithdrawing the latter, and links pivotally. connecting said handles tothesaid frame, whereby when said handles are operated to draw out thelower member, said detents are raised out of said recesses and thecontact roller is lowered out of contact with the selectors, substan-Yiially as described.

19. Ina music roll holder for mechanically operated musical instrumentsadapted to be operated by a perforated music sheet," a frame, a take-uproll journaled in said frame,

music sheet" thereon, a trackerv arranged par-- allel with sand roll,and IYIGBIISClII'lBd by the frame for accommodatmef mus-1c. spools ofdifferent Widths, comprising end-bearings, one of which is adjustabletoward and from the mhery'means for holding said adjustable bearingextended, andmeans for rotating said bearing.

v2O. A music roll holder formechanically operated musical instrumentsadapted to be operated by a perforated music sheet comprising a frame, atake-up roll journaled in the frame, means for rotating said roll towind the music sheet thereon, a tracker mounted on the frame and overwhich the sheer.- passes in its travel to the take-up roll, a musicspool, and a pair of end. bearin s therefor carried by the frame, aslidab y mounted spindle carrying one of said bearings, a pinion splinedon said spindle, and a gearwheel meshing with the-pinion.

21. A music roll holder for mechanically operated musical instrumentsadapted to be 85 operated by a perforated music sheet, comprising aframe, a take-up roll journaled in the frame, means for rotating saidroll to wind" the music sheet thereon, a tracker over which the musicsheet passes in 11S travel t6 the take-up roll, a music spool, and apair of. end bearings therefor carried by the frame, a slidably -mountedspindle carrying one of said bearings, means for rotating said spindleto-rewi'nd themusic'sheet on the music spool, and" a spacer carried bythe frame and adapted to be moved into and out of en gagement with theslidably mounted end bearing to hold the latter extended or topermitthesame to be retracted.

l 22. A music roll holder for mechanicallv operated musical instrumentsadapted to be operated by a perforated music sheet, comprising a frame,a take-up roll journaled in the frame, means for rotating said roll to:05 wind the music sheet thereon, a tracker over which the music sheetpasses in its travel to the take-up roll a music spool, and a pair ofend bearings therefor-carried by the frame, a slidably mounted spindlecarrying one of. 10 said bearings, means for rotating said spindle torewind the music sheet on the music spool, and a hookpivoted. to theframe andadaptedto be swun in behind the head of the slidably mounts endbearing tohold the. r15 latter extended.

23. A music roll holder for mechanically operated musical instruments,comprising a frame and a tracker carried thereby, a take,-

up roll journaled in the frame, means for ro-- I 9 tating said roll, amusic spool, and a pair of end bearings therefor earned by the frame,-a

slidably mounted spindle carrying one of said bearings, a pinion splinedon said spindle, a gear Wheel meslnngwlth sald pinion, anda 1 25hookpivoted to the frame and adapted to be swung over the spindle behindthe end bearing carried thereby to' hold the same extended. 24;, A musicroll holder for mechanically operated musical instruments, comprising a1 0 fi ame a hollow knob 'rojectin' from one'iside thereof,atake-up-roljournals intheframe,

andfmeans carried by'the frame for accommodating music-spools ofdifferent widths,

( compris ngjend bearings, a,- slidable s in'dle carrying o e of saidbearings, said s in le being jouriia ed in the frameand sli able intothe said hollow knob a pinion splined on the spindle, and a gearwheel-meshing with the pinion.

' 25. operated musical instruments, com rising a frame, a hollowknob-projecting rom one side-thereof, a take-up roll journaled in theframe, and'me'ans carried by the frame for accommodating music spools ofdifferent widths, comprising -endbearings, a slidable spindle carryingone of said bearings, said 4 spindle being journaled for rotation in thesaid'mechanism', at all times indepen the location of the frame,

frame and having one end projecting into the said 'hollo'w knob, andmeans for rotating said spindle. I

' 26. A piano having amu'sic -sheet holder comprising a frame movablefrom and beneat the iano keyboard, a delivery and a take-up r0 1'ournaled in said frame, meansfor driving t e take-up roll,mechanism-for changing the speed at which the take-up roll is driven,and means for operating said mech anism while the frame is in any ofits-positions, substantially as described.

27. A pianohaving a music 'sheet holder comprising a frame movable fromand bcneath the piano keyboard, a delivery and, a

take-up roll journaled in said frame, means for driving the take-upioll,mechanism for changingthe speed at which the take-up roll is driven, andmeans for manually o crating ently of 28. A piano having a playingattachment, comprising a rotatable drum and a motor for rotating it, anda controlling device comprising a music roll holder frame movablebeneath the piano key-board and carrying a delivery and a take-up roll,a rotary disk driven by the motor, a shaft supported by the frame 29. Apiano having a playing attachment, comprising a rotary drum, a motorfordriving the drum, and means actuated by the drum for operating thesound-producing devices of the piano, a music sheet holder comprising aframe movable from and beneath the piano keyboard, a delivery and a takeup roll journaled in said frame, means deriving motion from the motorfor rotating the take-up roll,

A music- 'roll'holder' for mechanically mechanism for changing the,speed at which the take-up roll is driven; and means for manuallyoperating said speed mechanism,

said mechanism being operative at all times independently of thelocation of the movable frame, substantially as described.

30. v A piano having a playing-attachment, comprising a rotatable drum,means for rotating it, and means actuated-by'the drum for operating thesound producing devices of the piano,;a music sheet holder comprising aframe movable from beneath the piano keyboard, a delivery and,a takeeuproll jour' .naled in said frame,-means deriving motion from the motorfor rotating the take-up roll, mechanism forchanging the speed at whichsaid take-up roll-is driven, and means for operating said speed changingmechanism while the movable frame is in any of its positions',substantiallyas described.

31. A piano having a playing attachment, comprising a rotatable drum, amotor for rotating it, and means actuated by the drum foroperating thesound producing devices of the piano, a music sheet holder movablyarranged beneath the piano keyboard, a delivery and a take-up rollerjournaled in said holder a friction disk driven from the motor, a shaftlongitudinally movable in a bearing carried by, said holder, and 9 in afixed bearing, a friction wheel on said shaft having its periphery.arranged in friction'al contact with the face of said disk, a wormsplined on said shaft and movable with the'music sheet holder,"-gearin'g driven by said worm for driving the take-up roller, and meansfor longitudinally shifting the shaft to move the friction wheel towardand from the center of the friction disk, substantially "as described;

32. A piano having a playing attachment,

comprising a rotatable drum, a motor for rotatin it, andmechanismactuated by the drum Q01 operating the sound producing devices of thepiano, a music sheetf holder movably arranged beneath the pianokeyboard, a delivery and a takeup roller journaled in said holder, afriction disk driven from themotor, a shaft longitudinally movable in 'abearing carried by said holder and in a fixed bearing, a frictionwheelon said shaft having its peri hery arranged in frictional contactwith tie face of the music sheet holder, a worm wheel and pinion drivenby said worm, a gear wheel on the take-up gearing with the pinion, andmcans "for shifting said shaft longitudinally independently of themovement of the music sheet holder to move the friction wheel toward andfrom the center of the friction disk, substantially as described.

33. A piano having a playing attachment comprising a music/sheet holderand means whereby said'holder is movably supported beneath the key-boardof the piano and adapted to be moved in under the key-board and movedout to bring the music sheet in view, a take-up roll andend bearings-fora delivery roll carried by the holder, arotary ings for a deliveryroller, and means for driv-.

ing the take-up roller, QOIIIPIISIIIg frictional gearlng, sald gearingbeing operable to drive the take-up roller irrespective of the positionof the bodily movable music-sheet holder.

35. A piano having a playing attachment, comprising a .bodily movablemusic-sheet holder carrying a take-up roller and end bearings for adelivery -roller,'and driving means for theltake-up roller, said drivingmeans being operable to drive the take-up roller irrespective of theposition of the music-sheet holder.

' In. testimony whereof Ihave hereunto set my 11 and in messes.

GEORGE HOWLETT DAVIS; Witnesses .MARGARET A. JACOBS,

J. FRED BERSTEOI-IER, Jr.

presence of two subscribing wit- 3o

